Two-sided sponge



FIG. 1 is a top plan view of a two-sided sponge showing my new design;

FIG. 2 is a side elevational view thereof, the other side being a mirror image;

FIG. 3 is a front elevational view thereof the rear being a mirror image; and,

FIG. 4 is a bottom plan view thereof.

The surface texture is partially shown for convenience of illustration, it being understood that the surface texture is uniformly continuous over the surface on which it is shown. 

The ornamental design for a two-sided sponge, as shown and described. 